Jung Sung-jae (born October 1967) is a South Korean entrepreneur and former dermatologist. He is the founder and former chief executive officer of Classys, a medical aesthetics device manufacturer, and a co-creator of Dr. Jart+.[1][2] Forbes estimated his net worth at US$760 million in 2025.[3]
Early life and education
Jung Sung-jae was born in October 1967.[4] He attended Hanyang University,[5] where he earned a bachelor's and master's degree in medicine.[6]
Career
Medical career
In 2002, he began serving as the director of Soft Touch Dermatology Clinic (소프터치 피부과).[7]
Classys
In 2007, while still working as a dermatologist, Jung founded Classys.[8] The company began to develop medical devices, with a focus on skin care.[7]
In 2017, Classys went public on the KOSDAQ.[7]
In 2022, Bain Capital Private Equity acquired a 60.84% stake in Classys for 670 billion Korean won.[9] Jung and his family collectively sold their majority stake while retaining approximately 12.93% ownership in the company.[6][10]
Personal life
Jung is married to Lee Yeon-joo. They have two children.[6][3]
References
- John Kang. K-Beauty Boom Lands Former Dermatologist On Korea’s 50 Richest List Forbes, April 14, 2025, retrieved 2025-07-12^
- Clare Austin. Just what the doctor ordered: the philosophy of Dr.Jart+ Moodie Davitt Report, 2017-02-27, retrieved 2025-07-13^
- Jung Sung-jae Forbes, retrieved 2025-07-12^
- 임시주주총회결과 KOSDAQ^
- Jung Sung-Jae Bloomberg, retrieved July 13, 2025^
- Seo-yeon Yoon. [공시王] 정성재 클래시스 창업주, 지분 팔아 6700억원 현금 확보 Infostock Daily, April 8, 2022, retrieved 2025-07-12^
- Jae-hoon Kim. 'K뷰티 신데렐라’ 정성재 클래시스 창업자, 한국 부자 43위 올라 Insight Korea, April 18, 2025^
- ‘아빠 찬스’로 900억 돈방석… 클래시스 매각의 이면 시사위크, 2022-01-28, retrieved 2025-07-12^
- Bain Capital buys 61% stake in Kosdaq-listed Classys for $553 mn - 매일경제 영문뉴스 펄스(Pulse) Pulse, retrieved 2025-07-12^
- So-hee Park. 클래시스 최대주주, 베인캐피탈에 경영권 지분 매각 ebn.co.kr, January 27, 2022^